Air drying device with automatic regeneration function

Abstract

The air drying device with the automatic regeneration function comprises an air valve cavity, the air valve cavity comprises a first port, a second port, a third port and a fourth port, a first macromolecule dehumidification core block is arranged in the first port, a second macromolecule dehumidification core block is arranged in the second port, and a fan and a heat exchanger are arranged in the third port; a humidity sensor is arranged in the fourth port, an air valve is arranged in the middle of the air valve cavity, a main shaft of the air valve is connected with an air valve actuator, and the air valve actuator drives the air valve to reverse. The air drying device with the automatic regeneration function is adopted, the air valves are automatically switched, the paths in the air valve cavities are changed, through the paths in the different air valve cavities, the adsorption and dehumidification functions on outdoor fresh air and the desorption and regeneration functions on the macromolecule dehumidification core blocks are achieved, meanwhile, the functions of adsorption, desorption and the like are achieved, and the air drying efficiency is improved. And dry air is continuously, uniformly and independently provided for a required space.

Description

Technical Field

[0001] This application relates to the technical field of air drying devices, and particularly to an air drying device with automatic regeneration. Background Art

[0002] In order to maintain the safe operation of negative pressure in the purification workshop, the negative pressure isolator needs to continuously exhaust air to the outside during operation, so fresh air needs to be supplemented. Generally, the negative pressure isolator adopts the method of taking air locally. At the same time, the required air volume of the negative pressure isolator is very small, ranging from several cubic meters per hour to dozens of cubic meters per hour, and it is impossible to supply with conventional equipment. Due to the exhaust air of other operating equipment in the workshop and the breathing needs of the staff, a large amount of fresh air also needs to be supplemented. However, the air humidity in the negative pressure isolator is much higher than the requirements of other areas. The higher the air humidity requirement, the higher the treatment cost. In order to meet the requirements of the negative pressure isolator, treating all the fresh air in the workshop to the requirements of the negative pressure isolator causes a large amount of energy waste. Summary of the Invention

[0003] To overcome the above disadvantages, the purpose of this application is to provide an air drying device with automatic regeneration, so as to effectively solve the above technical problems.

[0004] To achieve the above purpose, this application adopts the following technical solutions:

[0005] This application provides an air drying device with automatic regeneration, including an air valve chamber. The air valve chamber includes a first port, a second port, a third port, and a fourth port. A first polymer dehumidification core block is arranged in the first port, a second polymer dehumidification core block is arranged in the second port, a fan and a heat exchanger are arranged in the third port, and the fan is close to the outside of the third port. The heat exchanger is located in the blowing direction of the fan. A humidity sensor is arranged in the fourth port. An air valve is arranged in the middle of the air valve chamber. The main shaft of the air valve is connected to an air valve actuator, and the air valve actuator drives the air valve to change direction. Among them,

[0006] In the first direction of the air valve chamber, the first port is communicated with the fourth port to form a dehumidification and drying air duct. Outdoor fresh air is dehumidified by the first polymer dehumidification core block and then detected by the humidity sensor and discharged into the negative pressure isolator. The third port is communicated with the second port to form a desorption and regeneration air duct. Outdoor fresh air passes through the fan and the heat exchanger and then blows out dry hot air to the second polymer dehumidification core block to desorb and regenerate it;

[0007] The air valve cavity is in the second direction. The second port is communicated with the fourth port to form a dehumidifying and drying air duct. Outdoor fresh air is dehumidified by the second polymer dehumidification core block after desorption and regeneration, and then discharged into the negative pressure isolator after being detected by the humidity sensor. The third port is communicated with the first port to form a desorption and regeneration air duct. Outdoor fresh air blows out dry hot air to the first polymer dehumidification core block through the fan and the heat exchanger to perform desorption and regeneration on it.

[0008] Further, the polymer dehumidification core block includes a polymer adsorption and desorption material, and the polymer adsorption and desorption material includes a polymer adsorbent or silica gel or molecular sieve or aluminophosphate molecular sieve or activated carbon.

[0009] Further, the fan includes an axial flow fan or a centrifugal fan.

[0010] Further, the heat exchanger includes an electric heater or a finned heat exchanger or a microchannel heat exchanger.

[0011] Further, the humidity sensor includes a capacitive humidity sensor or a resistive humidity sensor or a thermal energy humidity sensor.

[0012] Further, the air valve actuator includes an electric air valve actuator or a pneumatic air valve actuator or a hydraulic air valve actuator.

[0013] Beneficial Effects

[0014] An air drying device with automatic regeneration provided by the present application realizes the adsorption and dehumidification function of outdoor fresh air and the desorption and regeneration function of the polymer dehumidification core block by automatically switching the air valve and changing the path in the air valve cavity. It has both adsorption and desorption functions, and continuously and evenly provides dry air for the required space alone. The device has a simple structure, is convenient for operation, installation and maintenance, and is installed separately at the air inlet of the negative pressure isolator, which can effectively solve the air drying and dehumidification requirements of small air volumes. Description of the Drawings

[0015] The drawings are used to provide an understanding of the technical solutions of the present disclosure, and constitute a part of the specification. They are used together with the embodiments of the present disclosure to explain the technical solutions of the present disclosure, and do not constitute a limitation to the technical solutions of the present disclosure. The shapes and sizes of the components in the drawings do not reflect the actual proportions, and the purpose is only to schematically illustrate the content of the present application.

[0016] Figure 1 It is a schematic diagram of the device structure principle in the first direction of the air valve cavity provided by an embodiment of the present application.

[0017] Figure 2Schematic diagram of the structural principle of the air valve cavity provided in an embodiment of the present application in the second direction.

[0018] In the above drawings,

[0019] 1. First polymer dehumidification core block; 2. Second polymer dehumidification core block; 3. Fan; 4. Heat exchanger; 5. Humidity sensor; 6. Air valve cavity; 7. Air valve actuator; 8. Air valve; a. First port; b. Second port; c. Third port; d. Fourth port. Detailed implementation manners

[0020] The above solutions will be further described below in conjunction with specific embodiments. It should be understood that these embodiments are for illustrative purposes only and not for limiting the scope of the present application. The implementation conditions adopted in the embodiments can be further adjusted according to the conditions of specific manufacturers, and the implementation conditions not specified are usually those in conventional experiments.

[0021] Unless otherwise defined, the technical terms or scientific terms used in the embodiments of the present disclosure should have the ordinary meanings understood by those of ordinary skill in the art to which the present application belongs. The "first", "second" and similar terms used in the embodiments of the present disclosure do not denote any order, quantity or importance, but are only used to distinguish different components. The terms such as "including" or "comprising" mean that the elements or objects appearing before this word cover the elements or objects listed after this word and their equivalents, without excluding other elements or objects. The terms such as "connected" or "coupled" are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. In this document, "electrical connection" includes the case where the constituent elements are connected together through an element having a certain electrical function. The "element having a certain electrical function" is not particularly limited as long as it can transfer and receive electrical signals between the constituent elements to be connected. The "element having a certain electrical function" can be, for example, an electrode or a wiring, or a switching element such as a transistor, or other functional elements such as a resistor, an inductor or a capacitor. The "upper", "lower", "left", "right", etc. are only used to represent the relative positional relationship, and when the absolute position of the object to be described changes, the relative positional relationship may also change accordingly.

[0022] In the present application, the orientation or positional relationship indicated by the terms "upper", "lower", "inner", "middle", etc. is based on the orientation or positional relationship shown in the drawings. These terms are mainly used to better describe the present application and its embodiments, and are not used to limit that the indicated device, element or component must have a specific orientation or be constructed and operated in a specific orientation.

[0023] Embodiment

[0024] One embodiment of the present application provides an air drying device with automatic regeneration, as Figure 1 and Figure 2 shown. The device includes a valve chamber 6, which includes a first port a, a second port b, a third port c, and a fourth port d. A valve 8 is arranged inside the valve chamber 6. The main shaft of the valve 8 is connected to a valve actuator 7. The valve actuator 7 includes an electric valve actuator, a pneumatic valve actuator, or a hydraulic valve actuator, and also includes other control devices that can have the same function. The valve actuator 7 can drive the valve 8 to rotate to achieve the function of switching different paths inside the valve chamber 6. A first polymer dehumidification core block 1 is arranged in the first port a of the valve chamber 6, and a second polymer dehumidification core block 2 is arranged in the second port b. The first polymer dehumidification core block 1 and the second polymer dehumidification core block 2 include core blocks made of polymer adsorption and desorption materials. The polymer adsorption and desorption materials include polymer adsorbents, silica gel, molecular sieves, aluminophosphate molecular sieves, activated carbon, etc. A fan 3 and a heat exchanger 4 are arranged in the third port c, and the fan 3 is close to the outside of the third port c. The heat exchanger 4 is located in the blowing direction of the fan 3. The fan 3 includes an axial flow fan or a centrifugal fan, and also includes other air supply devices that can have the same function. The heat exchanger 4 includes an electric heater, a finned heat exchanger 4, or a microchannel heat exchanger 4, and also includes other heat exchange devices that can have the same function. The fan 3 sends air to the heat exchanger 4 to form dry hot air. A humidity sensor 5 is arranged in the fourth port d. The humidity sensor 5 includes a capacitive humidity sensor, a resistive humidity sensor, or a thermal energy humidity sensor, and also includes other monitoring humidity devices that can have the same function. The valve actuator 7 drives the valve 8 to change direction, so that in the first direction, the first port a of the valve chamber 6 is communicated with the fourth port d to form a dehumidification and drying air duct. Outdoor fresh air is dehumidified by the first polymer dehumidification core block 1 and then discharged into the negative pressure isolator after being detected by the humidity sensor 5. The third port c is communicated with the second port b to form a desorption and regeneration air duct. Outdoor fresh air blows out dry hot air to the second polymer dehumidification core block 2 through the fan 3 and the heat exchanger 4 to perform desorption and regeneration on it; in the second direction, the second port b of the valve chamber 6 is communicated with the fourth port d to form a dehumidification and drying air duct. Outdoor fresh air is dehumidified by the regenerated second polymer dehumidification core block 2 and then discharged into the negative pressure isolator after being detected by the humidity sensor 5. The third port c is communicated with the first port a to form a desorption and regeneration air duct. Outdoor fresh air blows out dry hot air to the first polymer dehumidification core block 1 through the fan 3 and the heat exchanger 4 to perform desorption and regeneration on it.

[0025] The specific working principle of an embodiment provided by the present application is as follows:

[0026] As Figure 1As shown, when the air valve chamber 6 is in the first direction, the dehumidification and drying path from the first port a to the fourth port d (a-d) is opened, and at the same time, the desorption and regeneration path from the third port c to the second port b (c-b) is opened. Outdoor fresh air adsorbs moisture through the first polymer dehumidification core block 1 in the first port a of the air valve chamber 6. The dried outdoor fresh air is discharged into the negative pressure isolator through the fourth port d of the air valve chamber 6. At the same time, the outdoor fresh air is sent by the blower 3 in the third port c of the air valve chamber 6 to the heat exchanger 4 for heating. The dried hot air after heating desorbs and regenerates the second polymer dehumidification core block 2 in the second port b, so that the adsorption function is restored.

[0027] When the humidity sensor 5 at the fourth port d detects that the moisture content of the dried outdoor fresh air exceeds the preset value, the humidity sensor 5 provides a signal to instruct the air valve actuator 7 to control the air valve 8 to automatically rotate reciprocally. At this time, the air valve chamber 6 changes direction, switching from the first direction to the second direction, as Figure 2 shown. When the air valve chamber 6 is in the second direction, the dehumidification and drying path from the second port b to the fourth port d (b-d) is opened, and at the same time, the desorption and regeneration path from the third port c to the first port a (c-a) is opened. At this time, outdoor fresh air adsorbs moisture through the second polymer dehumidification core block 2 in the second port b. The dried outdoor fresh air is discharged into the negative pressure isolator through the fourth port d of the air valve chamber 6. At the same time, the outdoor fresh air is sent by the blower 3 in the third port c to the heat exchanger 4 for heating. The dried hot air after heating desorbs and regenerates the first polymer dehumidification core block 1 in the first port a, so that the adsorption function is restored. In this way, the automatic regeneration air drying process is continuously carried out. According to the humidity requirements of the monitored dry air, the air valve 8 is automatically switched to change the air flow path in the air valve chamber 6. Through different paths, functions such as adsorption and desorption are realized simultaneously, so as to achieve the automatic regeneration air drying process.

[0028] The above embodiments are only used to illustrate the technical concept and characteristics of the present application. The purpose is to enable those who are familiar with this technology to understand the content of the present application and implement it accordingly, and it cannot be used to limit the protection scope of the present application. Any equivalent transformation or modification made in the spirit of the present application should be covered within the protection scope of the present application.

Claims

1. An air drying device with automatic regeneration, characterized in that: It includes a wind valve cavity, the wind valve cavity includes a first port, a second port, a third port and a fourth port, the first port is provided with a first polymer dehumidification core block, the second port is provided with a second polymer dehumidification core block, the third port is provided with a fan and a heat exchanger, and the fan is close to the outside of the third port, the heat exchanger is located in the blowing direction of the fan, the fourth port is provided with a humidity sensor, and a wind valve is provided in the middle of the wind valve cavity, the main shaft of the wind valve is connected to the wind valve actuator, and the wind valve actuator drives the wind valve to reverse, wherein, The air valve chamber is in the first direction, the first port is connected with the fourth port to form a dehumidification and drying air duct, the outdoor fresh air is dehumidified by the first polymer dehumidification core block and then discharged into the negative pressure isolator after being detected by the humidity sensor, the third port is connected with the second port to form a desorption and regeneration air duct, the outdoor fresh air passes through the fan and the heat exchanger and blows out dry hot air to the second polymer dehumidification core block to desorb and regenerate it; The air valve chamber is in the second direction, the second port is connected with the fourth port to form a dehumidification and drying air duct, the outdoor fresh air is dehumidified by the desorption and regeneration of the second polymer dehumidification core block, and then discharged into the negative pressure isolator after being detected by the humidity sensor, the third port is connected with the first port to form a desorption and regeneration air duct, and the outdoor fresh air passes through the fan and the heat exchanger and blows out dry hot air to the first polymer dehumidification core block to desorb and regenerate it.

2. The air drying device with automatic regeneration according to claim 1, characterized in that: The polymer dehumidification core block includes a polymer adsorption and desorption material, and the polymer adsorption and desorption material includes a polymer adsorbent or silica gel or molecular sieve or aluminum phosphate molecular sieve or activated carbon.

3. The air drying device with automatic regeneration according to claim 1, characterized in that: The fan includes an axial flow fan or a centrifugal fan.

4. The air drying device with automatic regeneration according to claim 1, characterized in that: The heat exchanger includes an electric heater, a fin heat exchanger, or a microchannel heat exchanger.

5. The air drying device with automatic regeneration according to claim 1, characterized in that: The humidity sensor includes a capacitive humidity sensor, a resistive humidity sensor, or a thermal humidity sensor.

6. The air drying device with automatic regeneration according to claim 1, characterized in that: The damper actuator includes an electric damper actuator, a pneumatic damper actuator, or a hydraulic damper actuator.

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